Many evolutionists have concluded that all existing naturalistic origin of life hypotheses are highly untenable. Consequently, some prominent evolutionists have hypothesized an alternate origin of life theory called exobiogenesis, or the theory that life evolved elsewhere in the universe and was carried to earth. Those who reject both the theistic world view and the possibility of abiogenesis on the ancient earth must assume that conditions existed elsewhere in the solar system or the universe which were more favorable for the origin of life or biological molecules. Recognizing that conditions on earth historically precluded the spontaneous origin of life forces exploring exobiogenesis to maintain the naturalistic world view. This view has also motivated the reintroduction of an intelligent design theory called directed panspermia. Nowhere does the literature reveal as vividly the impossibility of a naturalistic origin of life on the earth than in this field. The fact that an entirely hypothetical scenario has been proposed in a theory which is supported by virtually no empirical evidence forces a review of the major exobiogenesis theories.